1. Division of Gastroenterology, Department of Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Foundation, Chia-Yi, Taiwan
2. School of Medicine, Tzu Chi University, Hualien, Taiwan
3. Institute of Brain Science, National Yang-Ming University School of Medicine, Taipei, Taiwan
4. Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
5. Endoscopic Center for Diagnosis and Treatment, Taipei Veterans General Hospital, Taipei, Taiwan
6. Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan
7. Division of Gastroenterology, Departments of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan